RT Journal Article
SR Electronic
A1 Jakubíček, Josef
A1 Hřibová, Martina
A1 Kučera, Jaroslav
A1 Kubišová, Milena
T1 The Influence of Nucleating Agents and Process Parameters on Phase Structure of Isotactic Polypropylene and its Copolymer with 3% Ethylene
JF Manufacturing Technology Journal
YR 2016
VO 16
IS 1
SP 103
OP 106
DO 10.21062/ujep/x.2016/a/1213-2489/MT/16/1/103
UL https://journalmt.com/artkey/mft-201601-0021.php
AB The homopolymer of the isotactic polypropylene (iPP) and the random copolymer of the isotactic polypropylene and 3% ethylene (iPPE) were used in this study. Isotactic polypropylene can be prepared in α, β and γ morphological phases depending on its crystallization conditions. The phase β content has a strong influence on mechanical, optical and thermal properties. The samples with nucleating agents (NA) α and β were used. Various process parameters were used to prepare melted samples: two thicknesses and three different cooling regimes. Wide-angle X-ray scattering (WAXD) and scanning electron microscopy (SEM) were used to investigate the phase structure. The results show that iPP without nucleation agents (4mm,